The GitHub User Public Keys API allows developers to list public keys for a user, list their public keys, as well as to get, create, update, and delete a public key. Some information is accessible by...

Protect a site with AuthPilot API, a two-step authentication that helps users to access a website using their phone number. This extra step is valuable because it adds security to blogs and websites...

From their site: Developers of installed applications have the option of using a programmatic login method to access Google services protected by user login. An installed application is installed on...

From their site: You build great web applications. We have millions of users who store their data on Yahoo!. Browser-Based Authentication (BBAuth) makes it possible for your applications to use that...

iHealth provides wireless scales, blood pressure monitors, and other mobile monitoring devices, along with an app that allows patients to track their own health data, including weight, BMI, bone mass...

OpenStack is an open source cloud computing platform for public and private clouds. The Keystone Identity Service allows clients to obtain tokens that can be used to access OpenStack cloud services....

The Add Store API offered by HP IDOL OnDemand lets developers add a User Store that they can use to store a collection of user information. Developers can use a user store to authenticate users, and...

The Tinfoil Security API, a RESTful API, is designed to help developers programmatically do all the things also available to utilize on the web application. It ensures through the authentication that...

IronWifi provides network authentication service via hosted RADIUS servers, that can be deployed within minutes. The API provides authentication for users, visitors or mobile devices, before allowing...

Kairos is a facial recognition API that allows users to integrate advanced security features into their applications and services. The Kairos API uses REST calls, and requires and API key for access...

BlueTarp Financial is a financial services company dedicated to serving building supply dealers in the U.S. BlueTarp provides a transaction authorization API that developers can integrate into their...

TrustedCoin is a bitcoin security service that offers to add additional levels of security and authentication to bitcoin storage and transactions. The TrustedCoin API uses REST calls and returns JSON...

Okta is an enterprise-level solution for centrally storing and managing user profiles and identity data. It enables single sign-on authentication across multiple applications and devices - even when...

Fareclock provides web-based employee time tracking services built around biometric verification. Fareclock offers a REST API enabling customers to integrate their service into 3rd party applications...

LaunchKey seeks to eradicate passwords by providing multi-factor authentication through smartphones and tablets. Built around the idea that physical devices are now more secure than digitally stored...

Mozilla Persona is an online identity service for websites and web applications. Users can set how they would like to login to websites and applications. Publishers can add Persona to their websites...

The service provides both installed software and a hosted service for management of online passwords and other authentication credentials. It allows secure access to login information for all company...

Duo Security enables protected login and transactional functions for smartphones users. It does this by sending users authorization verification from web-based platform logins to their phones. Their...

VoiceVault is software that uses an individualâ€™s vocal characteristics for biometric identity verification over the phone, web, or via mobile and smartphone applications.
The VoiceVault Fusion API...

Lanoba provides easy registration for users by giving them the option to log into your website via their existing social network accounts like Facebook and Twitter, among others. With fewer passwords...

LiveEnsure is a SaaS authentication for web, cloud and mobile apps. It helps developers strengthen their existing site or app login process. Developers can use the service each time they authenticate...